static void
spi_at91_transaction_end(cyg_spi_device* dev)
{
// Disable the SPI controller
HAL_WRITE_UINT32(AT91_SPI+AT91_SPI_CR, AT91_SPI_CR_SPIDIS);
// Disable SPI clock
HAL_WRITE_UINT32(AT91_PMC+AT91_PMC_PCDR, AT91_PMC_PCER_SPI);
spi_at91_drop_cs((cyg_spi_at91_device_t *) dev);
}
static void
spi_at91_transaction_end(cyg_spi_device* dev)
{
cyg_spi_at91_device_t * at91_spi_dev = (cyg_spi_at91_device_t *)dev;
cyg_spi_at91_bus_t *spi_bus =
(cyg_spi_at91_bus_t *)at91_spi_dev->spi_device.spi_bus;
// Disable the SPI controller
HAL_WRITE_UINT32(spi_bus->base+AT91_SPI_CR, AT91_SPI_CR_SPIDIS);
// Disable SPI clock
HAL_WRITE_UINT32(AT91_PMC+AT91_PMC_PCDR,1<<spi_bus->interrupt_number);
spi_at91_drop_cs((cyg_spi_at91_device_t *) dev);
}
static void
spi_at91_transaction_transfer(cyg_spi_device *dev,
cyg_bool polled,
cyg_uint32 count,
const cyg_uint8 *tx_data,
cyg_uint8 *rx_data,
cyg_bool drop_cs)
{
cyg_spi_at91_device_t *at91_spi_dev = (cyg_spi_at91_device_t *) dev;
// Select the device if not already selected
spi_at91_start_transfer(at91_spi_dev);
// Perform the transfer
if (polled)
spi_at91_transfer_polled(at91_spi_dev, count, tx_data, rx_data);
else
spi_at91_transfer(at91_spi_dev, count, tx_data, rx_data);
// Deselect the device if requested
if (drop_cs)
spi_at91_drop_cs(at91_spi_dev);
}
